The Why of It All

So I'm working on Nathaniel Fludd III, and in this book the antagonist comes on screen in a major way for the first time. In the past, he's merely been an off screen threat or catalyst. And since he's now fully on stage, I have to spend some time with him and get a handle on his motivation, the why of it all. Why is he doing this? Pursuing this goal?

I started out by brainstorming a list of what the end goal he was pursing was. I ended up with a list of six things, only of couple of which felt l